Two former Parramatta Eels players are accused of harbouring semi-automatic weapons and possessing more than half-a-million dollars in cash after dramatic arrests in Sydney's Centennial Park yesterday.

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Simon Blewett, chief of staff to Premier Jay Weatherill, told the committee that there were no set protocols in place for dealing with critical incidents.

While media adviser Kate Baldock said she did not, as a matter of course, inform her minister of all inquiries made to her.

She also did not pass on information in an email which related to finalised court proceedings in the case of a man who had raped a girl at a school in 2010.

The parliamentary inquiry was set up to examine how the state government and the education department handled that case.

An independent investigation has already criticised the department over the incident, particularly a decision not to inform other parents for more than two years.

However, Premier Weatherill was cleared of having any previous knowledge of the case.

Mr Blewett told the committee on Friday that he could not recall dealing with or forwarding a key email about the incident in 2010 but was sure he did not forward it to Premier Weatherill, who was then the education minister.

Liberal committee member Rob Lucas said it seemed "incomprehensible" that Mr Blewett could not remember dealing with the email yet was sure he didn't send it to the Mr Weatherill.

"There is an obvious conflict, in my view, in that particular position," Mr Lucas said.